Hazard and hydraulic categories; extents and categorisations based on the Flood Planning Level (1% AEP flood + 500mm freeboard).

Hazard and hydraulic categories; extents and categorisations based on the Flood Planning Level (1% AEP flood + 500mm freeboard).\r

Hazard and hydraulic categories; extents and categorisations based on the Flood Planning Level (1% AEP flood + 500mm freeboard).

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Hazard and hydraulic categories; extents and categorisations based on the Flood Planning Level (1% AEP flood + 500mm freeboard). Hazard and hydraulic categories; extents and categorisations based on the Flood Planning Level (1% AEP flood + 500mm freeboard).

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erowal pats_and_home sussex tullarwalla wandandian warrowing womerong

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Hazard and Hydraulic Categories. Extents and categorisations based on the 100-year flood.

Hazard and hydraulic categories; extents and categorisations based on the Flood Planning Level (1% AEP flood + 500mm freeboard).

Hazard and hydraulic categories; extents and categorisations based on the Flood Planning Level (1% AEP flood + 500mm freeboard).

Study Objectives The key objective of this Flood Study is to develop computational models that can be used as the basis for a Floodplain Risk Management Study and Plan for the study area. The study is also to assist SCC to undertake flood-related planning decisions for existing and future developments. The study covers the Lake Wollumboola catchment and the Culburra Beach village catchment. The components of the study were to: collate available historical flood-related data; analyse of historical rainfall and lake level data; undertake a community consultation program; develop numerical models of flooding in the catchment and calibrate them to historical data; determine the flood behaviour including design flood levels, velocities and flood extents within the catchment; to determine provisional residential flood planning levels and flood planning area; to assess the sensitivity of flood behaviour to potential climate change effects such as Lake Wollumboola Flood Study WMAwater 150917_LakeWollumboola_FloodStudy_Final:24 September 2015 5 increases in rainfall intensities and sea level rise; and to assess the floodplain categories in accordance with Council policy and undertake provisional hazard mapping.

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Hydraulic categories for the 1% AEP flood; floodway, flood storage and flood fringe.

The Shoalhaven River catchment covers an area of 7000 square kilometres with approximately 120 square kilometres of floodplain downstream of Nowra. The village of Terara is located on the floodplain …Show full descriptionThe Shoalhaven River catchment covers an area of 7000 square kilometres with approximately 120 square kilometres of floodplain downstream of Nowra. The village of Terara is located on the floodplain approximately 2.5 kilometres downstream of Nowra Bridge. Terara was the original settlement on the south bank. The devastation of the 1860 and 1870 floods caused most of the population to move to the higher ground at Nowra with the subsequent decline of Terara. The village has continued to be flooded periodically, but people are still attracted to the area as a place to live. The population is now housed in a collection of heritage listed buildings and more modern premises, and there is some pressure for further development. The Shoalhaven River has a well-documented history of flooding going back to 1860. The Lower Shoalhaven River Flood Study was completed in April 1990 and established design flood levels across the floodplain. The Terara Village Floodplain Management Study identified the existing flood problem and canvassed the various measures to mitigate the effects of flooding and minimise the damages for future development.

barrengarry_creek budderoo_national_park hampden_bridge lake_yarrunga moss_vale_road shoalhaven_river tallowa_dam

Hazard and Hydraulic Categories. Extents and categorisations based on Flood Planning Level (1% AEP flood + 500mm freeboard). Hazard and Hydraulic Categories. Extents and categorisations based on Flood Planning Level (1% AEP flood + 500mm freeboard).

Graphs and result data

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Hydraulic categories for the 1% AEP flood; floodway, flood storage and flood fringe.